





A game by Core-Series
Jul 09 2026
Between July 8-9 there's been major issues in OVH datacenters that negatively affect entire Core-Series, these issues has shut down websites, worlds, networks and load-balancers randomly, the issues originates from OVH doing upgrades that appear not to be rolling out as planned. if a world or website is offline, or if a website isn't updating like it should, or anything weird is going on, it's due to what's happening in OVH. this also affect the network of Core-Series, it may result in loss of connection, or sudden ping spikes.
Dec 15 2021
We are currently running a poll if we should launch second season of Zesoria unmanaged, you find it here.
Feb 20 2021
The issue we had that prevented players from logging in has been solved!
Feb 19 2021
We're currently having little background issues preventing people from login, you can bypass the issue by change your password to same you currently have, we're working to solve this issue as fast as possible!
Feb 08 2021
Today we released client version 1.61, if you're using Windows client it will automatically download itself. If you use other kind of client you may need to download the latest version!
This is the changelog of MasterCores
Items highlighted in red are changes that haven't been applied yet!
Items highlighted in red are changes that haven't been applied yet!
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Dec 15 2021V 1.63
Fixed a glitch that would allow players to use skill pools in unintended worlds.
Mar 08 2021V 1.63
Fixed so that the corner of bottom-left in containers doesn't block you from using items when accidentally clicking within its area.
Mar 07 2021V 1.63
Fixed a few issues related to the boss Gardrium.
Mar 06 2021V 1.63
Updated visible settings in guild war pages.
Mar 06 2021V 1.63
Updated guild war information in about page.
Mar 06 2021V 1.63
Added ability to customize guild wars better (aol/bless, drop rates, PVP-E rates)
Mar 06 2021V 1.63
Fixed a glitch on bottom floor of Spiritkeep Guildhall
Feb 28 2021V 1.63
Modified the speed formula of characters.
Feb 24 2021V 1.63
Fixed a problem in Zesoria that prevented players from advancing to level 217 and above.
Feb 23 2021V 1.63
Fixed a glitch that made FACC's of Zesoria unable to purchase houses.
Feb 21 2021V 1.62
made desert quest soloable in Zesoria.
Feb 21 2021V 1.62
made it possible to become and stay promoted as free account.
Feb 20 2021V 1.62
changed so health and mana is filled when advancing in level.
Feb 19 2021V 1.62
removed Oracle cash limit to leave Rookgaard.
Feb 19 2021V 1.62
Upgraded background login-system.
Feb 18 2021V 1.62
Fixed so you can access Rookgaard premium side without golden account (as intended with ability to travel after GACC changes).
Feb 18 2021V 1.62
Fixed a typo in pool-delivery message.
Feb 05 2021V 1.60
Fixed a glitch in auction there runes and other items wasn't properly showing the amount that actually existed on the character.
Feb 02 2021V 1.60
Fixed a glitch which caused you to be rooked when dying below level 15 in Seasonal Worlds.
Feb 01 2021V 1.60
Added stronger fluids to loot information (Seasonal exclusive items)
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